<!doctype html>
<!--
@license
Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<html>
<head>
  <meta charset="utf-8">
  <script src="../../node_modules/@webcomponents/webcomponentsjs/webcomponents-bundle.js"></script>
  <script src="wct-browser-config.js"></script>
  <script src="../../node_modules/wct-browser-legacy/browser.js"></script>
  <script type="module" src="../../polymer-legacy.js"></script>

</head>
<body>
  <custom-style>
    <style is="custom-style">
      .c {
        --cache-element-border: 8px solid blue;
      }
    </style>
  </custom-style>
  <dom-module id="cache-element">
    <template>
      <style>
        :host {
          display: block;
          border: var(--cache-element-border, 4px solid orange);
        }
      </style>
      cache-element
    </template>
    <script type="module">
import { Polymer } from '../../polymer-legacy.js';
Polymer({
  is: 'cache-element'
});
</script>
  </dom-module>

  <cache-element id="cache1" class="c"></cache-element>
  <cache-element id="cache2"></cache-element>

  <script type="module">

suite('custom-style scope cache', function() {

  test('elements created declaratively conditionally styled via custom style receive correct properties', function() {
    var t1 = document.querySelector('#cache1');
    var t2 = document.querySelector('#cache2');
    assertComputed(t1, '8px');
    assertComputed(t2, '4px');
  });


  test('elements created imperatively conditionally styled via custom style receive correct properties', function() {
    var t1 = document.createElement('cache-element');
    t1.classList.add('c');
    var t2 = document.createElement('cache-element');
    document.body.appendChild(t1);
    document.body.appendChild(t2);
    assertComputed(t1, '8px');
    assertComputed(t2, '4px');
  });

});


function assertComputed(element, value, property, pseudo) {
  var computed = getComputedStyle(element, pseudo);
  property = property || 'border-top-width';
  assert.equal(computed[property], value, 'computed style incorrect for ' + property);
}
</script>

</body>
</html>
